German-Swiss physicist, framer of the theories of Relativity. Born at Ulm, March 14th 1879. He published his first theory of Relativity in 1905 and in 1915 he issued his general theory. He received the Nobel prize for physics in 1921. He was deprived of his post as director of the Kaiser Wilhelm institute for Physics- Berlin in 1933, when he then became professor of mathematics and a permanent member of the Institute for Advanced Study at Princeton, New Jersey, U.S.A.